<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
		<title>横版导航栏特效</title>
		<style type="text/css">
			
			html {
  font-family: roboto;
  font-size: 16.36364px;
}
html ul li {
  list-style: none;
}
html body {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  min-height: 95vh;
  background: #E0E0E0;
  border: 2.5vh solid #ffffff;
  /*animation: respiration ease-out 3s 1s;
		animation-iteration-count: infinite;*/
}
html body:before {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 50%;
  background: #D84315;
  content: "";
}
html body .menu {
  position: relative;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  box-sizing: border-box;
  height: 70px;
  width: 70px;
  padding: 15px 20px;
  border-radius: 5px;
  background: #ffffff;
  box-shadow: 0 4px 64px rgba(0, 0, 0, 0.15);
  transition: 1.3s cubic-bezier(0.53, 0, 0.15, 1.3);
  z-index: 2;
}
html body .menu.expanded {
  height: 80px;
  width: 400px;
}
html body .menu span {
  white-space: nowrap;
  visibility: visible;
  opacity: 1;
  transition: .3s;
  transform: rotateY(0deg);
}
html body .menu span:nth-of-type(1) {
  transition-delay: .4s;
}
html body .menu span:nth-of-type(2) {
  transition-delay: .5s;
}
html body .menu span:nth-of-type(3) {
  transition-delay: .6s;
}
html body .menu span:nth-of-type(4) {
  transition-delay: .7s;
}
html body .menu span.hidden {
  width: 0;
  visibility: hidden;
  opacity: 0;
  transform: rotateY(90deg);
}
html body .menu span.hidden:nth-of-type(1) {
  transition-delay: .3s;
}
html body .menu span.hidden:nth-of-type(2) {
  transition-delay: .2s;
}
html body .menu span.hidden:nth-of-type(3) {
  transition-delay: .1s;
}
html body .menu span.hidden:nth-of-type(4) {
  transition-delay: 0s;
}
html body .menu a {
  text-decoration: none;
  text-transform: uppercase;
  font-weight: bold;
  color: #333333;
  padding: 5px;
  transition: .3s;
}
html body .menu a:hover {
  color: #D84315;
}
html body .container {
  order: 1;
  width: 20px;
  height: 24px;
  padding: 5px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
html body .container:hover .toggle:before {
  top: -9px;
}
html body .container:hover .toggle:after {
  bottom: -7px;
}
html body .container .toggle {
  position: relative;
  width: 100%;
  height: 2px;
  background: #aaaaaa;
}
html body .container .toggle:before {
  position: relative;
  display: flex;
  top: -7px;
  height: 2px;
  width: 100%;
  background: #aaaaaa;
  content: "";
  transition: top .25s ease, bottom .25s ease, transform .5s ease;
}
html body .container .toggle:after {
  position: relative;
  display: flex;
  bottom: -5px;
  height: 2px;
  width: 100%;
  background: #aaaaaa;
  content: "";
  transition: top .25s ease, bottom .25s ease, transform .25s ease;
}
html body .container .toggle.close {
  height: 0;
}
html body .container .toggle.close:before {
  transform: rotate(45deg);
  top: 0;
}
html body .container .toggle.close:after {
  transform: rotate(-45deg);
  bottom: 2px;
}
@keyframes respiration {
  0% {
    min-height: 100vh;
    border: 0vh solid #ffffff;
  }
  75% {
    min-height: 95vh;
    border: 2.5vh solid #ffffff;
  }
  100% {
    min-height: 100vh;
    border: 0vh solid #ffffff;
  }
}
		</style>
	</head>
	
	<body>
		
		<div class="menu expanded">
			<div class="container close">
				<div class="toggle close"></div>
			</div>
			<span class=""><a href="#">Home </a></span>
			<span class=""><a href="#">About</a></span>
			<span class=""><a href="#">Info</a></span>
			<span class=""><a href="#">Contact</a></span>
		</div>
<script src="../js/jquery-1.11.2.min.js" type="text/javascript" charset="utf-8"></script>
		<script type="text/javascript">
			$('.container').on('click', function() {
	$('.menu').toggleClass('expanded');
	$('span').toggleClass('hidden');
	$('.container , .toggle').toggleClass('close');
});
			
		</script>
	</body>
</html>
